Indoor-outdoor thermometer



H. SCHLA|CH INDOOR-OUTDOOR THERMOMETER Now. 13, 1928.

0 M W w 1 f A t en Hmmwwwwwawwwwwwwwwwwnwwwwwmmmmw w. c y o 5 1 v /1 m ma f m pm a s f w m u n d e m e E D S T U 0 Nw. 13, 392., mm3@ H. scHLMce-a INDOOR OUTDOOR THERMOMETER Filed my 6, 19221 s sheets-sheet 2 Nov. y13, 1928.

1922 s sneets-sheet 5 Filed July 6;

1N VEN TOR ya* alza i? /f ATTORNEYS Patented Nov. 13, 1928.

UNITED STATES HERMAN scHLAIcH, or LONG'ISLAND CITY, NEW YORK.

INDOOR-OUTDOOR THERMOMETER.

Application VledV July- 6,

This invention relates to temperature indicating devices, and is particularly altho not exclusively useful in connection with what may bey called an indoor-outdoor ther'- mometer, owing to the fact that it provides, at a point within a building, a visual indication of both the temperature within. and the temperaturewithout the building.

' Generally speaking, one of the characteristic novel features of the invention resides in a frame, adapted'to serve as a support for the indoor temperature responsive and indicating means and as a support for the outdoor temperature indicating means, and also V adapted to serve as a temporarysupport'forv l the outdoor temperature responsive element and the iieXible connection by which the latter is connected to the outdoor temperature indicating means. Other more detailed features of the invention will appear from the following description and will be pointed out in the appended claims. p

The invention will be understood from the following description taken in connection 25 with the accompanying drawings in which is illustrated ak temperature indicating instrument having the invention embodied therein, and in which Figure l is a front elevation; Figure 2 is a side elevation partly in section; Figure 3 is a rear elevation; Figure V4: is a sectionall side elevation on the line i-A of Figure 6 of the lower portion of the instrument; Figure 5 is a fragmentary perspective view of one of the elements of the instrument; Figure 6 is a sectional elevation on the line 6-6 of Figure 4; Figure 7 is a fragmentary perspective view showing how the instrument may be conveniently installed Vwithin a building; and Figure 8 is a plan view of the top of the instrument frame showing particularly a slot therein. i

Referring to the drawings, thc indooroutdoor thermometer therein shown has a frame having a circular portion 10 and a iadiallyextending portion 11, said frame ing provided with a cavity in its back. frame may be of any suitable material, such as sheet metal formed to the desired shape, and the circular Aportionof the frame is provided in its V'front with an opening adapted to receive and be closed by a crystal- 13 in a manner hereinafter described; Se cured'to the outside or front of theradially 1922'. serial No. 573,089.

extending portion l1 of the frame is the indoor temperature responsive and indicating means,'such as a bulb thermometer 14 having a cooperating scale plate 15, suitable slow heat-conducting material such as a piece of fibre 16 being interposed between the scale plate l5 and the supporting frame 11. At its upper end the instrument frame is shown as provided with a perforated lug 18 by which the instrument may be conveniently hung on a nail or screw inserted inthe wall.

The outdoor thermometer portion of the instrument will now be described. In order that the temperature responsive element of this portion of the instrument may be located out of doors, it is made movable and consists of a bulb 20', of any suitable form, which during distribution of the instrument may be removably held in the cavity in the back of the portion 11 of the frame by clips 21 secured to the frame and adaptedl to re ceive the temperature resppnsive element. The temperature responsive element 20 is operatively connected with the outdoor temperature indicating means, hereinafter de tubing 23, say fifteen feet, and a supporting structure in the nature of a spool is provided in the cavity of the frame portion 10 upon which the major portiony of said tube may be coiled, while the bulb 20 is mounted in the clips 21. This spool, which will be hereinafter described, also serves to hold that portion ofthe tube 23 which it is unnecessary to use when the instrument is installed with the bulb out-of-doors, this amount of unnecessary tubing being variable depending upon the distance at which the instrument ,ilszlliocated from the kpoint at which the bulb cameriere. .i

g5' lage detailispfztlhe structure of the outfdporftempera'tiire'idlcating means are best shown in Figures 3 to 6. From these figures, it will be apparent that these parts are located within the cavity in the circular' portion 10 of the frame. The various parts of the temperature indicating mechanism are motherin order to portion the screws t3?.

-nsby lclips 4 9 puncliedout of theV fg ipportrextends beyond the ed ot 'the Located in the e cup-shippedportion 27,` cup-shaped portion 2'? and; rotetebly" justable therein, is a disc 28, beto-Teen which and the bottom of the cup-shaped is arranged ltriction gincrensing means in the form et 'ff disc 30, which is slightly concave es vi "l from the-side toward the disc 2S.f (ind et its edges. is provided with radial slits?` tbe edges oty which are sliglitlj-.jbent out of line with one iereese' Vthe twee?L the edge of Lvbe sprin disc 28. The disc 28, Awhich held Within the cnpf slumpedY peine supporting meneery byV e spring is provided Wi a hole Wbicli'- serves rrear bearing VJfor n spindle 34 theouter endet which posses t'lii'ii-aiizl journelefl inra holefin al plete secured to but spaced from thefsupporting member 2G by posts 36 riveted-to J(he supportingmember fnd ,receiving screws 37 which pztssftbrn Athe plete Atits outer end, the si ndle'f; Carries Vpointer 39 which coogl r ,i with a seele Iwhich" may be v,en ibosseil di i the plete', but is preierably embot. a lsepznnte dial zplate llOsecinedto ythe plete 35 in" my suitable'manner7 es by 1" PFns of Spirnlly Wound ro spindle y34. iso'lourdon ytube 4t2` which ut'one endv passes thru'and is rigioiy connected. to post t3 (Fig 6) secured to the disc 8, 'und et theother end is'conneeted to'ene'fend et reversely A Wound `bi-metnllic compensating-spring Ilm-the@ innerv end ot` which is connectd-to thespindle Seyth'e seidtnbe Yand spring` being preterealy err ^ed"i n substantially the same plane The 'outer endolt the Bourdon tube'e2 isproyided. with purposes andA is enfezfitonsion fi- Gier @llin ion el? ot. tbe tube eoiinectedto :i looped port suppertingA member in anyv editable manner ing member 26 end'benwintofsnug' ment- ,Witli the tube 23. Secured to the beck ofi the cup-shaped portion27 ot thesupport ing 1neml er Y26 by enyslntnble means such as screws, 50, is e@ circular plate 5l which cup-shaped portion of the supportinginember 2li Upon this spool, the mejor portion ont the 'tieribleconnecting tube 23 may' be coiled inthe manner Vshown in Figure't, Whiletlie bulb 2Ov is held by the clips 2l;v and trom ,this spool any amount of the tube may be uncoiled `when the imatrumeirtl is being` in stalled, a notch 53 being` termed-1n thejtop of thelange ot' the radially extending'portion, l1 of tliefframe, to permit the tube to be yled out from Vthe cavity Within 'seid frame. By making the vnot-cb 53curved',' es

4f. vlt Will be noted thatthis 239 ore best shown in Figure 8, it becomes possible to lead the tube 23 out et the center ot the top of the instrument, which produces e symmetricsilarrangement. A

'The supporting member 26 may be secured' Within the circuler portion lO of the trame @in 12in-y suitable manner-.y i* s shown, the suprig member ismade oit a shape to fit 'fthe-insidelfofthe back flange oi the treme extends@ short distance up Vlinto tliecevity in the portionll of .the frame and punched out nndtormed in"tbisjportion '55V oit the supporting lmnnbei4 ere flugs' 5750i the form best shown in Figure 5,. v.fhichere adapted to, entereY slot in the' portion 11.- `The ends oit the lugs '57' ere preferably' beveled es shown,` and lthe lugs have enough spring ect-ionso that in assembling the instrument it'y is merelynecessary to' force the supporti member toward the frame,"whereupon the ends of the lugs 57 Willenter the slot in the fimneend Will spring vbeck into e position in the'ront ,of the treme por ti nf 11,.l thereby 'locking the 'member28 te the` iframe. The ends'l ot thzef luo's Q57 ;may

be hidden bythfepijeces' offfibre 16 in. the 'beck of which e* cavity may be `formed to receivetheselugs es4 clearly shown inylgf ure'e. "'Itat'. anyl time it is necessary to re- 'inovevtbe' supporting member 26 romtlie 'f ieme', the" lugsg? can'eesily be sprung Ybeck" ond'disengaged from the slot bylinseftingend turning vthe end vot ser driver in 4the notches 58kt each side ol the lugs.5{.` f i 'v lnterposed 1between the supporting mem'- ber26 and the crystell is zisl'ie'et nietel ring 59 of thetorm best shown in Figure .ringjs so formed that it is capable ,of V.e.ixnftingg springV action upon thecrystel 13 thereby holding` the letter vsnugly in engagement l'with the outer flange portion of the 'freine portion l0 efterthe instrument-fis zi'ssembled.V In' )reetice 'tlieyurious hurts of the temperetureY indicating"mechdnism vot the outdoor thermometer nre essembled on the'sup- Ylmrting"member 26, the crystal i3 and the ring` 59 inserted in the freine portion above 'mentioned The instrument maybe celibratedlby the rotation oit the ,disc 2S' carryingl the post i3 `to 4which one 'end of the Bourdon tube islet# tefclied l as abovedeseribecb' such rotation' of tbe d" 28 causmgfmovement ot tbepomter r tbe scale 40. ,ln order to permit the rpermit the disc 28 `to'be rotated without disassembling theinstrument, a lug 61 is punched out of the disc to a position at substantially right angles thereto, and said lug is passed through a hole in the spring disc 30, thru a slot in the portion 27 ot' the plate 26, and thru a slot 62 in the plate 51 upon which a suitable scale and notation may be embossed, as is clearly shown in Figures 3 and il.

The instrument may be shipped and distributed to the user arranged in the form shown in Figures 1, 2 and 3, with the bulb 20'held by the clips 21 in the cavity ot' the trame, and with the tube 23 coiled on they spool formed by the supporting member 26 and the plate` 51. It ivillrbe note-d that this facilitates easy packing and sate handling ot the instrument.

Figure 7 gives a general idea of the manner in which the instrument Vmay be installed Within the room ot a building., A. shoivn the bulb 20 is hung up outside and near the top of a Window, and the tube 23 is led'iin at the top of the WindenT trame which may be slight-ly grooved in .order to sash to be closed Without jamming the tube; or it desired.. the top et the Window sash may be .slightly grooved tor the same purpose. The Vtube 23 is then lcd along the Wall `(56 of the room, preferably adjacent mouldings if possible, until the point is reached'ivhere it is desired to hang the instrument. The instrument is then hung by the perforated lug 18 from a nail or screw in the wall, any surplus length ot the tube 23 `being coiled yupon the spool provided ivithin the instrument, and the tube being led out from the cavity Within the in-v strument thru the Vnotch 53 provided tor that purpose. When properly installed, the tube 23 is inconspicuous andl does not detract trom the attractive appearance of the instrument. Y

`While I have shoivn one form in which the invention may be embodied, it is to be understood that the construction shoivn may be modiiied in many respects Withoutdeparting trom the vspirit of vthe invention, and that it Ais my intention to cover all such modiiications in the appended claims. lVhatlclaim is: i. f

1. A thermometer comprising a trarne, temperatureA indicating means carried by said frame and visible from the front thereot, `a temperature responsive element, a ilexfib'le connection connecting said element to operate said indicating means, and means carried by said frame for removably holding said element and the major portion of said flexible connection.

2. A. thermometer comprising a trame, iaving. a cavity at its back, temperature inrlicatine means carried b said frame and visible from the front thereof, a tempera-ture responsive element, a flexible connection operatively connecting said element with said indicating` means, and means located in the cavity of said trame tor removably holding in the cavity said element and the vmajor portion ot said flexible connection.

3. 'A thermometer comprising a traine having a cavity at its back, temperature indicating means carried by said frame and visible from the front thereof, a temperature responsive element, a flexible connection operatively connecting said element with said indicating means, means located in the cavity ot said trame tor removably holdingl said element in said cavity, and a spool located in the cavity of said trame upon which. the major portionof the ilexible connection may be Wound. f

l. An indoor-outdoor thermometer comprisinga trame having a circular portion and a radially extending portion and having a cavity in its back, indoor temperature rc- `st ionsive and indicating means carried by outdoor temperature indicating means, and

means located in the cavity ot' said frame for removably holding said element andthe najor portion ot said 'flexible connection.

5. An indoor-outdoor thermometer coinprising a trame having a circular portion and a radially extending iol-tion both having cavities in their backs, indoor temperature responsive and indicatingmeans carried by the radially extending portion ot' said frame and visible from the front thereof, outdoor temperature indicating` means carried by the circular portion ot said trame and visible from the outside or front thereof, a movable temperature responsive element, a flexible connection operatively connecting said element with the outdoor temperature indicating' means, means located in the cavity inthe circular portion ot said irame for removably holding the major portion ol' said flexible connection, and means located in the lll! lio

nee

'a pointer carried by said spindle andcooperating with said dial plate, a Bourdon tube arranged between said disc and said dial plate, one `end ot said tube being connected to said disc and the other end operatively connected to said spindle, and ineens for rotating said disc whereby the device may be calibrated.

8.7111 a temperature indicating device, a. supporting member having a cup-shaped portion, a disc rotatably arranged therein, friction increasing-.means rio-operating with said supporting member and Withsaid disc,

a dial plate mounted on said supporting member and spaced therefrom, a spindle journaled in'said disc and in said dial plate, a pointer carried by` said spindle and cooperating with said dial plate,a Bourdon tube arranged bet-Ween said disc and said dial plate, one end of said tube being` connected to said disc and the other end operatively Vconnected to said spindle, and a projection from said disc extending thru said supporting member whereby said disc may be rotated and the device calibrated.

9. Ina temperature indicating device, a supporting member having a cup-shaped portion, a temperature indicating' means carried by saidr Supporting member on its vcupped side, a plate secured to the back of Y said supporting member and extending bevondfthe edges oic thek cup-shaped portion, thereby forming a spool, Ya temperature responsive element andA a .flexible connection. ybetween said temperature el ement andftenn perature kmdicatmg meansv ',:or operating the latter trom thev tormer, the major portion of vthis connection beingcoiled upon said spool.

10. A 'frame having a liange and a lug projecting from saidliangeaid AFlange.being provided wth a slot extendingfrom'the edge oit said '.tlange toa location opposite the middle of vsaid lug.V

Y. 11. In an instrument, -a Bourdon -tube spirally Wound,'a temperature compensating spring also spirally Woundand attached to the inner end of the tube, both the tube and thev spring being arranged in substantially the same plane, and an indicator operating shaft connected to the compensating spring at thecenter thereof for actuation thereby.

12. In van instrument, a Bourdon' tube spirally Wound, means fory adjustably holding the outer end of the tube stationary, a temperaturev compensating springV also spirally wound, a rotatable member` to' which the inner end o1 said spring is attached,'and

means connecting the inner-end of saidr tube and the outer end of said spring..v l 18. In an instrument, a BourdonV tube spirally Wound,.means for adjustably hold ingthe outer end of the tube stationary, a temperature compensating` spring also spi# rally Wound, a rotatable member to Which the inner end of said spring is attached, means for trictionally holding saidsupporting member in any position, and means .conmeeting the inner end ot 'said tube and theouter end ot said spring.

le. ln an instrument, a spirally Wound, a supporting member. rotatably adjustable around the axis ot' the' spi; rally wound tube, to Which member the outer end of said tube is attached, a temper.- a 'e compensating Vspring'also spirally Wound and attached at its outer end to the inner end of the tube, both the tube and the spring being arranged in substantially the same plane, anda member mounted for rotation on the axis ot the tube and the spring for operating thereby to Which member .the inner end of the spring is attached.

Bourdon tube y 15. A thermometer for separatelyA indicating the temperatures at a *pluralityof locations comprising a casing, means 'mounted on the casing for indicating the temperature at the casing, a second temperature indicating means including a pointerand a scale, mounted on the casing adjacent the first, means for relativelyadjusting the pointer and scale to render the readings thereof accurate, a temperature responsive element, and long, liexibleoperating connections between said element and the adjustabletemperature indicating means, enabling the temperature responsive element to be located at a distance from the casing in operation and to be brought to the Ycasing forv comparison of thetWo indicating ,means when subjected to the same'temperatures, so that the adjustable temperature. indicating means may be tested and set at any time byl refer-Y ence to the other temperature indicating means.k 1 Y Y' 16. An indoor-outdoor thermometer comprising a frame arranged to be hung upon a Wall, indoor temperature responsive and indicating means carried byfsaid rameand visible from the front thereof, outdoor teun perature indicating means .carried by the frame and visible from the front thereof, 'i

a movable temperature responsive element, a flexible connection operatively connecting said element With the outdoor temperature indicating means, and a'spool located Within the frame at the back thereof upon which the the controlling device to the indicator mech- 10 flexible connection may be Wound. anism to operate the latter, and a spool com- 17. In a distance type indicating instrupletely contained within the cavity in the ment, a body portion including a supportbody portion, on which the connecting tube 5 engaging back having a cavity7 therein, said may be WOuIld.

body including indicator mechanism, a con- 'In testimony whereof l have affixed my 15 trolling device for the indicator mechanism signature to this specification.

located at a distance therefrom, a long ieX ible pressure transmitting tube connecting HERMAN SCHLAICH. 

